Samsung is restoring production at a flat-panel display factory that briefly lost power Thursday evening, but is still unsure of what effects the outage will have on its overall production.

A facility that houses major production lines for Samsung Display outside of Seoul lost power for 11 minutes from 9:05 p.m. on Thursday, a spokesman said. He said that by Friday afternoon, production had been restored to 60 percent, and full restoration is expected by the end of the day.

The power outage was caused by a mistake made by a worker at the facility's electric supplier, Korea Electric Power.